The lever that opens the jaws before you hookup has a way to lock that lever after you hookup. If that lever is not locked would that allow the pin to just slip out when a lot of lifting pressure is applied? Probably so, I guess that is why they put a locking device (pin) on that lever. I'm just thinking out loud. I did drop my trailer onto the bedrails once!
Pete & Joan & "Honey" fur-baby.
2015 Montana 3611RL 2012 F350 6.7 DRW Lariat
Disc Brakes & Sailun 14 ply S637
6-pt Hydraulic leveling